User`s Manual
Contents
1. E User s Model MA7 JUXTA Manual Distributor Unified Signal Type IM 77J04A07 01E ES Please read through this User s Manual before use for correct handling Please keep this User s Manual for future reference YOKOGAWA IM 77J04A07 01E 1st Edition Jul 2003 MC Yokogawa Electric Corporation 2nd Edition June 2004 YK 1 CAUTIONARY NOTES FOR SAFE USE OF THE PRODUCT This User s Manual should be carefully read before installing and oper ating the product The following symbol is used on the product and in this manual to ensure safe use A This symbol is displayed on the product when it is necessary to refer to the User s Manual for information on personnel and instrument safety This symbol is displayed in the User s Manual to indicate precautions for avoiding danger to the operator such as an electric shock The following symbols are used only in this manual IMPORTANT Indicates that operating the hardware or software in a particular manner may cause damage or result in a system failure AN NOTE Draws attention to essential information for understanding the operations and or functions of the product 2 CHECKING PRODUCT SPECIFICATIONS AND PACKAGED ITEMS 1 Checking the Model and Product Specifications Check that the model and specifications indicated on the nameplate attached to the side face of the main unit are as ordered 2 Packaged Items Check that the packing cart2. d into position as shown below Slide lock 4 3 Using a Duct When using a wiring duct install the duct at leaset 20 mm away from the top and bottom faces of the main unit 5 INSTALLATION LOCATIONS 7 PART NAMES OF FRONT PANEL Avoid the following environments for installation locations The figure below shows the MA7 with its front panel cover being Areas with vibration corrosive gases dust water oil solvents di open rect sunlight radiation a strong electric field and or a strong magnetic field If there is any risk of a surge being induced into the power line and or signal lines due to lightning or other factors a dedicated lightning arrester should be used as protection for both this unit and a field installed device 6 EXTERNAL WIRING N WARNING To avoid the risk of an electric shock turn off the power supply and use a tester or similar device to ensure that no power is supplied to a cable to be connected before carring Zero adjustment volume ot Power indicator lamp Lit during power on Span adi X pan adjustment volume om out wiring work 8 MAINTENANCE Wiring should be connected to the terminals on the socket of the prod The product starts running immediately when the power is turned on uct The terminals for external connections are of M3 5 screws Use however it needs 10 to 15 minutes of warm up before it meets the c
3. on contains the following items MA7Z 1 Spacer used for DIN rail mounting 1 Users Manual this manual IM 77J04A07 01E 1 copy 3 GENERAL This plug in type distributor is used in combination with a two wire type transmitter to convert the transmitter s 4 to 20 mA DC signals into 4 to 20 mA DC current or 1 to 5 V DC voltage signals 4 MOUNTING METHOD Insert pull out the main unit into from the socket vertically to the face of socket Otherwise the terminals are bent and it may cause a bad contact Yokogawa Electric Corporation Network Solutions Business Divisiion 2 9 32 Naka cho Musashino shi Tokyo 180 8750 Japan Phone 81 422 52 7179 Facsimile 81 422 52 6793 4 1 Wall Mounting Remove the stoppers top and bottom from the product and pull out the main unit from the socket Fix the socket on the wall using two M4 screws Next insert the main unit into the socket and fasten the main unit with the stoppers top and bottom Main unit Mounting screws lt Mounting Dimensions gt Unit mm Pitch 55 or more Socket Noe N 1 More than 5 mm interval is 9 94 5 or 2 M4 required for side by side close mounting 2 Use the supplied spacer for DIN rail mounting to keep 5 mm interval 4 2 DIN Rail Mounting Insert a DIN rail into the upper part of the DIN rail groove on the rear of the socket and then slide the slide lock at the lower part of the socket upwards until the socket is fixe
4. ources Other wise accuracy cannot be guaranteed The grounding resistance must be 100 JIS Class D grounding The length and thickness of the grounding cable should be as short and thick as possible Directly connect the lead from the ground terminal terminal no 6 of the product to the ground Do not carry out daisy chained inter ground terminal wiring Use of the product ignoring the specifications may a Digital Power supply PD oo ee ooo Without SINK current 3 DC voltge current 4 standard cause overheating or damage Before turning on the power ensure the following a Power supply voltage and input signal value applied R 250 precision resistor to the product should meet the required for current output specifications b The external wiring to the terminals and wiring to ground are as specifications Do not operate the product in the presence of flammable or explosive gases or vapors To do so is highly dangerous The product is sensitive to static electricity exercise care in operating it Before you operate the product touch a nearby metal part to discharge static electricity 2 IM 77J04A07 01E 2nd Edition June 01 2004 00
5. rimp on terminal lugs for connections to the terminals specified performance Recommended cables A nominal cross sectional area of 0 5 mm or thicker for signal cables and that of 1 25 mm or thicker for 8 1 Calibration Apparatus power cables ADC voltage current standard Yokogawa 7651 or the equivalent A digital multimater Yokogawa 7561 or the equivalent When using When using Example to construct icj j o internal j external j ntinsicaly Safe System A precision resistor of 250 Q 0 01 1 W power supply power supply using Zener Barrier 8 2 Calibration Procedure 1 Connect the instruments as shown below 2 Use the DC voltage current standard and apply input signals equivalent to 0 25 50 75 and 100 of the input span to the product Check to see the corresponding output voltages are 0 25 50 75 and 100 respectively and within the specified accu racy rating R is used for current output ifthe output signals are out of the accuracy rating range adjust the output signal level using the zero and span adjustment vol umes on front face of the product Power supply IMPORTANT With SINK current 3 A p 6 o DC voltge The power line and input output signal lines should be a a 5 Qo standar installed away from noise generating s
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